Patents by Inventor Yuji Kawakita

Yuji Kawakita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Horizontal axis type wind turbine and method of construction thereof
    Patent number: 6408575
    Abstract: A tower comprises a base tower member fixed on a base in the ground, a lower tower member hingedly connected at a lower end thereof with an upper end of the base tower member through a hinge and swinging between a lying position and a standing position, a first stage connecting tower member connected at a lower end thereof with an upper end of the lower tower member, a second stage connecting tower member connected at a lower end thereof with an upper end of the first stage connecting tower member, and a third stage connecting tower member connected at a lower end thereof with an upper end of the second stage connecting tower member. Thus formed tower is raised swingingly around the hinge from the lying position to the standing position. A nacelle includes a tower penetrating hole through which the tower vertically penetrates and is formed by a plurality of nacelle sections divisible around the tower penetrating hole.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: June 25, 2002
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Shigeo Yoshida, Yuji Kawakita, Yasuhiro Koshioka, Toru Nagao, Noriyuki Takahashi